EPSG:24818 PSAD56 / UTM zone 18N
Projected system (Transverse Mercator) in use: South America - 78°W to 72°W, N hemisphere and PSAD56 by country. The full definition below, and conversion in one click.
| Code | EPSG:24818 |
|---|---|
| Name | PSAD56 / UTM zone 18N |
| Type | Projected system — Transverse Mercator |
| Area of use |
South America - 78°W to 72°W, N hemisphere and PSAD56 by country South America (Ecuador; Venezuela) between 78°W and 72°W, northern hemisphere, onshore. |
| Bounds | W -78,00° · S 0,00° · E -71,99° · N 11,62° |
| Countries | Ecuador, Venezuela |
| Datum | Provisional South American Datum 1956 |
| Ellipsoid | International 1924 a = 6378388 m · 1/f = 297 |
| Base geographic system | EPSG:4248 — PSAD56 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | PSAD56 to WGS 84 (5) (EPSG:1205) — accuracy 26 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -75 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=utm +zone=18 +ellps=intl +units=m +towgs84=-282,169,-371 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:24818.
WKT (ESRI format, the .prj content)
PROJCS["PSAD_1956_UTM_Zone_18N",GEOGCS["GCS_Provisional_S_American_1956",DATUM["D_Provisional_S_American_1956",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-75.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Ecuador
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.